body {
  margin: 0px;
  padding: 0px;
  background: #ffffff;
  color: #000000; 
  min-width: 300px;
}

div {
  width: 80%;
  height: 80%;
  position: absolute;    
  margin:auto;
  top:0;
  bottom:0;
  left:0;
  right:0;
  background-color: #ffffff;
}

img {
  max-width: 100%;
  max-height: 100%;  
  position: absolute;
  margin:auto;
  top:0;
  bottom:0;
  left:0;
  right:0;
}